厚煤层巷道掘进中托顶煤自燃防治技术

在厚煤层巷道掘进过程中顶板存在托煤层现象,因煤层存在裂隙,随着对顶板上方煤体持续供氧,煤层出现迅速氧化自燃征兆,采用无机复合凝胶发泡防灭火材料压住到煤体后,通过封闭煤层空隙和隔绝抑制氧化作用,使煤的氧化自燃现象停止,取样分析CO,CO2,N2,CH4,C2H6浓度变化,特别是CO体积分数由压注浆前的0.21%减小到注浆后的零,证明了新型无机复合凝胶发泡防灭火材料防使用效果理想,具有封闭、隔氧、环保等性能,其可成功应用于防治煤层自燃。

Spontaneous Combustion Prevention and Control Technology of Top Coal During Gateway Driving in Thick Seam

During the gateway driving in the thick seam,there was a top coal supported roof phenomenon in the gateway roof.Due to the cracks in the seam and with the continued oxygen supply to the top coal under the roof,there were rapid oxidized natural evidences on the top coal.After the inorganic compound gel foaming fire prevention and control material grouted in the coal body,with the seam gasp sealed and the coal oxidization isolated and restrained,the coal oxidization and spontaneous combustion phenomenon was s...